Sector element for disk filter



FIG. 1 is a front elevational view of a sector element for a disk filter showing my new design, the rear being essentially the same as the front shown;

FIG. 2 is an elevational view taken from one side thereof, the opposite side being a mirror image of the side shown;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for sector element for disk filter, as shown and described. 